CN104995405B - Inverter-integrated electric compressor - Google Patents

Abstract

Provided is an inverter-integrated electric compressor, which forms a filter circuit as a substrate, omits the connection of bus bars, improves the assembly of the inverter device, optimizes the structure of the substrate, and realizes the miniaturization and low cost of the inverter device. costing. In the inverter-integrated electric compressor, the inverter device (7) includes: a plurality of high-voltage electrical components (13) constituting a noise-removing filter circuit (16A); class substrate (14); a control class substrate (15) with a control class circuit (30) installed; and a filter circuit substrate ( 16), the structure is that a plurality of high-voltage electrical components (13), power substrates (14), control substrates (15), and filter circuit substrates (16) form an integrated unit, which is stored and arranged in the inverter in the containment unit.

Description

Inverter integrated electric compressor

technical field

The invention relates to an inverter-integrated electric compressor in which an inverter device is integrally assembled in a shell of the electric compressor.

Background technique

Compressors for air conditioners installed in electric vehicles, hybrid vehicles, etc., use inverter-integrated electric compressors in which inverter units are integrally assembled. This inverter-integrated electric compression mechanism is driven by converting the high-voltage direct current supplied from the on-vehicle power supply unit into three-phase alternating current of the required frequency through the inverter unit, and applying it to the electric motor.

The inverter device includes, for example, high-voltage electrical components such as coils and capacitors that are installed on the high-voltage line of the power supply to form a filter circuit for noise reduction; multiple switching elements such as IGBTs that convert direct current into three-phase alternating current (power element ) composed of switching circuit power substrates; control substrates with low-voltage operating control circuits such as CPU installed; and bus bars connecting these high-voltage electrical components, power substrates, and control substrates, etc. , which converts the direct current input through the P-N terminal into a three-phase alternating current, which is output from the UVW terminal.

As the above-mentioned inverter device, Patent Document 1 discloses a device in which an IPM (Intelligent Power Module, Intelligent Power Module) and a The inverter module is integrated with the control substrate, and the noise-removing filter composed of mounting high-voltage electrical components such as coils and capacitors on the resin substrate is installed in the junction box installed on the upper surface of the inverter box. circuit, the junction box is used as a cover material to cover and seal the upper surface of the inverter box, and the filter circuit is connected to the P-N terminal of the IPM through a bus bar.

In addition, Patent Document 2 discloses a device that covers the inner surface side of the substrate cover of the inverter accommodating portion provided on the casing side, and is fixedly installed by bolts and nuts through an elastic member on the side of the cover body. A power conversion substrate with components such as coils, capacitors, and switching elements mounted on a fixing tool such as a fixed tool. The substrate cover is relative to the casing, and the coil and capacitor are arranged in the insertion recess on the side of the casing, while the switching element is arranged on the side of the casing facing the element. On the surface, so positioned and fixed settings.

prior art literature

patent documents

Patent Document 1: Japanese Patent No. 4898931

Patent Document 2: Japanese Patent Laid-Open No. 2009-275606

Contents of the invention

The problem to be solved by the invention

In the above-mentioned Patent Document 1, a device is disclosed in which a coil and a capacitor are mounted on a resin substrate to form a filter circuit of an inverter device. Set other IPM and control substrates on one side of the inverter box, and electrically connect them through the bus assembly.

Therefore, the multiple high-voltage electrical components constituting the inverter unit, the filter circuit substrate on which these components are mounted, and the inverter module composed of the IPM and the control substrate must be assembled separately and integrated into one body. The two are electrically connected through a bus assembly. In this case, there are problems such as an increase in the number of parts, an increase in assembly man-hours, an increase in manufacturing cost due to complexity, and a decrease in productivity. In addition, it is necessary to use substrates with different structures such as filter circuit substrates, control substrates, and substrates constituting the IPM. Therefore, it is difficult to efficiently manufacture the substrates, and it is difficult to avoid high costs.

On the other hand, Patent Document 2 discloses a device in which an inverter device is assembled on the side of the substrate cover at one time, and then assembled on the casing side of the electric compressor. At the same time, on one power conversion substrate, A filter circuit including a coil and a capacitor, a switching circuit including a switching element, and a control circuit for controlling them are provided. Thus, although the number of components can be reduced to simplify the structure, facilitate assembly, and reduce costs, etc., it is unavoidable to increase the size of the power conversion substrate. Therefore, there are problems of increasing the size of the inverter housing and increasing the size of the compressor.

In addition, the power conversion substrate will become a large substrate with mixed high-voltage and low-voltage regions, so it is necessary to ensure the current density corresponding to the high voltage. Therefore, as the substrate, it is necessary to use an expensive substrate corresponding to high voltage, and some areas have excessive specifications, resulting in waste, and there are problems such as that the cost cannot be reduced.

The present invention has been developed in view of the above situation, and its purpose is to provide an inverter-integrated electric compressor, which forms a filter circuit as a substrate, omits the connection of bus bars, improves the assembly of the inverter device, and optimizes the structure of the substrate , to achieve miniaturization and cost reduction of the inverter device.

Contents of the invention

In order to solve the above-mentioned problems, the inverter-integrated electric compressor of the present invention employs the following aspects.

That is, in the inverter-integrated electric compressor of the present invention, an inverter device is integrally assembled in an inverter accommodating portion provided on the outer periphery of the casing, and the inverter device is characterized in that the inverter device includes: A plurality of high-voltage electrical components constituting a noise-removing filter circuit; a power substrate on which a power element is mounted; a control substrate on which a control circuit is mounted; and a plurality of high-voltage electrical components that are pattern-connected and mounted. A filter circuit substrate constituting the filter circuit; and a resin structure integrally formed by the plurality of housing portions of high-voltage electrical components and the assembly portion of each of the substrates, wherein the plurality of high-voltage electrical components The electrical components, the power-based substrate, the control-based substrate, and the filter circuit substrate form an integrated unit and are accommodated in the inverter accommodating portion.

According to this configuration, a plurality of high-voltage electrical components are pattern-connected on the filter circuit board, thereby constructing a noise-removing filter circuit constituted by connecting a plurality of high-voltage electrical components such as capacitors and coils to the high-voltage line. Its filter circuit board forms an integrated unit together with multiple high-voltage electrical components, power boards, and control boards, and is assembled into the inverter housing part of the casing, so that the inverter can be assembled as a whole type electric compressor. Therefore, a substrate different from a control substrate can be used for a high-voltage filter circuit substrate and a power substrate, thereby achieving a substrate that can secure a current density corresponding to high voltage. At the same time, the bus bar connection and its welding etc. between components constituting the filter circuit can be omitted, simplification of assembly, reduction of man-hours, and consequent reduction of production cost can be realized, thereby improving productivity. In addition, since the number of parts is reduced, it is possible to reduce the size and compactness of the inverter unit, and further reduce the size and weight of the inverter-integrated electric compressor.

Furthermore, in the above-mentioned inverter-integrated electric compressor, preferably, the plurality of high-voltage electrical components are accommodated in the housing portion of the resin structure, and the power substrate is assembled in the resin structure. The lower surface side of the assembly part of the body, the control board is assembled on the upper surface side of the assembly part of the resin structure, and the filter circuit substrate is assembled and stored in the resin structure The upper surface side of the accommodating portion of the high-voltage electrical component thus becomes an integrated unit.

According to this configuration, the resin structure of the inverter device which is an integrated unit is integrally assembled to the electric compressor by fastening the resin structure to the inverter accommodating portion with screws or the like. By loosening this screw, the entire unit is removed from the inverter housing. Therefore, assembly or maintenance of the inverter device can be simplified and facilitated.

Furthermore, in the above-mentioned inverter-integrated electric compressor, it is preferable that the inverter device is equipped with a UVW bus bar that converts the power in the inverter device into three-phase alternating current and outputs it to the motor side through a glass-sealed terminal. .

According to this structure, the electric power converted into the three-phase alternating current of the required frequency in the unitized inverter device can be output from the UVW bus bar to the glass-sealed terminal, and applied to the motor built in the case. Therefore, with the UVW bus bar, the layout freedom between the output position of the unitized inverter device and the glass-sealed terminal installed in the inverter accommodating part can be ensured, and the design can be facilitated.

Furthermore, in any one of the inverter-integrated electric compressors described above, it is preferable that the power substrate and the filter circuit substrate use the same structural substrate that can ensure a current density corresponding to high voltage.

According to this structure, the same high-voltage substrate installed on the high-voltage line, and the substrate through which a large amount of electricity corresponding to the high voltage flows, that is, the filter circuit substrate and the power substrate can be constituted by substrates of the same structure. Therefore, the substrate material used in the power substrate can be directly used for the filter circuit substrate, thereby realizing low-cost manufacturing of the filter circuit substrate.

Furthermore, in the inverter-integrated electric compressor, it is preferable that the power substrate and the filter circuit substrate adopt a multilayer structure substrate.

According to this configuration, by using a multilayer structure substrate as a high-voltage power substrate and a filter circuit substrate, sufficient current density corresponding to high voltage can be ensured in each substrate. Therefore, sufficient heat resistance can be ensured even when high voltage and high current generate heat or are used in a high temperature environment.

Furthermore, in any one of the above inverter-integrated electric compressors, it is preferable that the power substrate and the filter circuit substrate are made of the same substrate material, and are separated and divided to form the substrate.

According to this structure, two high-voltage power substrates and filter circuit substrates can be taken from the same substrate material and produced as a set. Therefore, the power substrate and the filter circuit substrate can be manufactured efficiently, and the cost can be reduced.

The effect of the invention

According to the present invention, a plurality of high-voltage electrical components are pattern-connected on the filter circuit substrate, thereby constructing a noise-removing filter circuit constituted by connecting a plurality of high-voltage electrical components such as capacitors and coils to high-voltage lines, and Its filter circuit board forms an integrated unit together with multiple high-voltage electrical components, power boards, and control boards, and is assembled into the inverter housing part of the casing, so that the inverter can be assembled as a whole type electric compressor. Therefore, a substrate different from a control substrate can be used for a high-voltage filter circuit substrate and a power substrate, thereby achieving a substrate that can secure a current density corresponding to high voltage. At the same time, the bus bar connection and its welding etc. between components constituting the filter circuit can be omitted, simplification of assembly, reduction of man-hours, and consequent reduction of production cost can be realized, thereby improving productivity. In addition, since the number of parts is reduced, it is possible to reduce the size and compactness of the inverter unit, and to reduce the size and weight of the inverter-integrated electric compressor.

Description of drawings

Fig. 1 is a perspective view of main parts of an inverter-integrated electric compressor according to an embodiment of the present invention.

Fig. 2 is a longitudinal sectional view along the axis of the motor casing of the inverter-integrated electric compressor.

Fig. 3 is an exploded perspective view of an inverter device incorporated into the above-mentioned inverter-integrated electric compressor.

Fig. 4 is a perspective view of an assembled state of the above inverter device.

5 is a schematic cross-sectional view of a four-layer structure substrate used in the power substrate and the filter circuit substrate of the inverter device.

detailed description

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 5 .

Fig. 1 shows a perspective view of the main parts of an inverter-integrated electric compressor according to an embodiment of the present invention, Fig. 2 shows a longitudinal sectional view along the direction of the motor housing axis, and Fig. 3 shows an exploded perspective view of an inverter device, Fig. 4 shows a perspective view of its assembled state.

The inverter-integrated electric compressor 1 includes a cylindrical casing 2 constituting a casing. The housing 2 has a structure in which a motor housing 3 for a built-in electric motor (not shown) and a compressor housing (not shown) for a built-in compression device (not shown) are integrally assembled.

Inverter-integrated electric compressor 1 is structured such that the electric motor and compression device built in housing 2 are connected by a rotating shaft, and the motor is rotationally driven by an inverter device 7 described later, thereby driving the compression device, passing through the periphery of the motor, Inhale the low-pressure refrigerant gas inside through the air inlet 4 provided on the rear end side of the motor casing 3, and compress it to high pressure through the compression device, and discharge it into the compressor casing and then to the outside.

In the motor housing 3 , a plurality of refrigerant passages 5 for passing the refrigerant in the axial direction are formed on the inner peripheral side, and feet 6 for mounting the electric compressor 1 are provided at a plurality of positions on the outer peripheral portion thereof. In addition, an inverter accommodating portion 8 for integrally assembling the inverter device 7 is integrally formed on the outer peripheral portion of the casing 2 (on the side of the motor casing 3 ). The structure of the inverter accommodating portion 8 is approximately square in plan view, the bottom surface is a partially flat base surface 9 formed by the wall surface of the motor housing 3 , and a flange portion 10 is erected around it.

After the inverter device 7 is assembled in the inverter housing part 8, as shown in FIG. 2, the cover body 11 is attached to the flange part 10, and it seals. As is well known, the high voltage line of the vehicle power supply unit is connected to the cover 11 through a connector not shown, and the connector is connected to the P-N terminal 34 provided on the side of the inverter device 7 (see FIG. 1 ). Thereby, DC high voltage power is applied to the inverter device 7 .

The inverter device 7 converts the high-voltage direct current supplied by the high-voltage line of the on-vehicle power supply unit into three-phase alternating current of a required frequency, and applies it to the electric motor to drive the electric motor. As shown in FIG. 3 , the inverter device 7 is configured to include a resin structure 12, a plurality of high-voltage electrical components 13 housed in the resin structure 12, and a The power substrate 14, the control substrate 15 assembled on the upper surface side of the resin structure 12, and the filter circuit substrate 16 assembled on the upper surface side of the accommodating part of the resin structure 12 where the high-voltage electrical components 13 are placed . In addition, in the inverter device 7, a UVW bus bar 31 for outputting the three-phase alternating current converted in the inverter device 7 to the motor side is provided.

The resin structure 12 is used to make the inverter device 7 an integrated unit. The resin structure 12 is integrally molded with a bottomed accommodating portion 17 with a volume required for accommodating a plurality of high-voltage components 13 , and a frame-shaped assembly portion 18 for assembling the power substrate 14 and the control substrate 15 . The accommodating portion 17 is formed corresponding to the side of the assembling portion 18 , that is, the side of the outer peripheral side on which the air inlet 4 of the motor case 3 is mounted. Around the housing part 17 and the assembly part 18, the unitized inverter device 7 is housed in the inverter housing part 8, and legs for fastening with screws 19 (see FIG. 1 ) are integrally formed at multiple positions. 20.

As will be described later, the housing portion 17 is configured to be mounted on the filter circuit board 16, thereby housing and setting a plurality of high-voltage electric circuits such as the common mode coil 21, the normal mode coil 22, and the smoothing capacitor 23 constituting the noise-removing filter circuit 16A. Assembly parts 13. The housing portion 17 has a housing space conforming to the outer shape of the circular coils 21 , 22 and the square capacitor 23 , and the multiple high-voltage electrical components 13 are fixed in the housing portion 17 by adhesive or the like.

The assembly part 18 is integrally formed on one side of the housing part 17, and is a frame-shaped assembly body, and has a height dimension for ensuring the required distance between the upper and lower power-based substrates 14 and control-based substrates 15 . A plurality of assembly protrusions 24 for assembling the power substrate 14 and the control substrate 15 are provided on the inner peripheral surface of the assembly portion 18 , and a space 25 is formed in the center thereof. In addition, in the assembly part 18, the support part 26 of the control board|substrate 15 which protrudes in L shape from one corner|corner to the center part of the space 25 is integrally formed.

In addition, the resin structure 12 is pre-embedded and formed to electrically connect between the P-N terminal 34 and the filter circuit substrate 16, between the filter circuit substrate 16 and the power substrate 14, and between the power substrate 14 and the control substrate 15. connection terminals etc.

On the power substrate 14, a switch circuit 28 and the like including a plurality of (six) switching elements 27 (power elements) such as IGBTs for converting direct current into three-phase alternating current are mounted. When assembling the power substrate 14 , it is fastened to the assembly convex portion 24 provided on the lower surface side of the assembly portion 18 of the resin structure 12 with screws or the like.

In addition, as shown in FIG. 5, the power substrate 14, for example, has four layers of copper foil L1-L4 on the core material B, which belongs to a multi-layer structure substrate PWB such as a four-layer structure substrate that can ensure a current density corresponding to a high voltage. Where there is a heat generating power element 27, a heat penetration portion 29 (see FIG. 2 ) made of heat-conducting material such as copper is provided to form a so-called copper damascene substrate that can conduct heat from the front side to the back side of the substrate.

The thermal penetration portion 29 of the power substrate 14 is structured such that when the unitized inverter device 7 is housed in the inverter housing portion 8, as shown in FIG. The heat generated in the power element 27 is dissipated to the base surface 9 of the motor casing 3 through the heat penetration part 29, so that the base surface 9 can be used as a heat sink for the power element 27. cool down. In addition, the low-pressure refrigerant gas sucked in through the air inlet 4 is cooled by flowing through the refrigerant passage 5, so the base surface 9 of the motor housing 3 sufficiently functions as a radiator as described above.

The control board 15 is equipped with a low-voltage control circuit 30 such as a CPU, which is used to control the operation of the inverter device 7 through the control signal sent by the vehicle ECU. The control board 15 is assembled to the upper surface of the assembly portion 18 of the resin structure 12 by being fastened to the assembly convex portion 24 with screws or the like. In addition, the central portion thereof is supported from below by the support portion 26 integrally formed on the assembly portion 18, thereby improving vibration resistance. In addition, the control substrate 15 can also be fixed on the support portion 26 by screws.

The filter circuit substrate 16 constitutes a high-voltage line that guides the direct current input to the P-N terminal 34 to the power substrate 14. Soldering or soldering the terminals of the terminals, and pattern-connecting them to the wiring pattern constituting the high-voltage line constitutes the filter circuit 16A as is well known. With respect to the resin structure 12 , the filter circuit board 16 is assembled and fixed on the upper surface side of the housing portion 17 of the high-voltage electrical component 13 .

In addition, the filter circuit substrate 16 must use a substrate that can ensure a current density corresponding to a high voltage. Therefore, as shown in FIG. 5 , like the power substrate 14 , for example, a multilayer structure substrate PWB such as a four-layer structure substrate provided with four layers of copper foils L1 to L4 can be used. The filter circuit substrate 16 and the power substrate 14 use the same multilayer structure substrate PWB. Therefore, two filter circuit substrates 16 and power substrates 14 can be taken from the same substrate material for matching production, and separated and divided to form substrates.

The UVW bus bar 31 is used to output the three-phase AC power to the motor side through the inverter device 7 . As shown in FIG. 2 , the UVW bus bar 31 is configured to be arranged using the space 25 between the power substrate 14 and the control substrate 15 sandwiching the assembly portion 18 of the resin structure 12 up and down. The UVW bus bar 31 is connected to a glass-sealed terminal 32 provided through the case 2 (motor case 3 ) in the inverter housing portion 8 . Thus, the junction box 33 connected via the glass-sealed terminal 32 is electrically connected to the motor.

In addition, the P-N terminal 34 is provided on the side of the resin structure 12 in such a way that it protrudes above the filter circuit board 16, and the connector on the side of the high-voltage line provided on the side of the cover 11 can be inserted into it. The P-N terminal 34 is connected to a high voltage line constituted by the wiring pattern of the filter circuit board 16 .

As described above, the inverter device 7 uses the resin structure 12 as a base material, and the common mode coil 21, the normal mode coil 22, and the smoothing capacitor 23, etc., which are components of the inverter device 7 are assembled on the resin structure 12. A high-voltage electrical component 13; a power substrate 14; a control substrate 15; a filter circuit substrate 16 formed by installing a plurality of high-voltage electrical components 13; As shown in FIG. 4 , an integrated inverter unit (unit) 35 is formed.

In addition, the inverter unit 35 is accommodated in the inverter housing portion 8 provided in the housing 2 (motor housing 3), and after the legs 20 of the resin structure 12 are fastened with screws 19, the cover 11 is attached to seal it. . In this way, the inverter-integrated electric compressor 1 is constituted in which the inverter unit 35 can be freely attached and detached in the inverter accommodating portion 8 .

As described above, according to the present embodiment, the inverter device 7 assembled in the inverter housing portion 8 of the casing 2 is configured to include a plurality of high-voltage electrical components 13 constituting the noise-removing filter circuit 16A, and the mounting The power substrate 14 on which the power element 27 is mounted, the control substrate 15 on which the control circuit 30 is mounted, and the filter circuit substrate 16 on which a plurality of high-voltage electrical components 13 are mounted in a mode connection to form a filter circuit 16A are integrated. The unit is housed in the inverter housing part 8 .

Therefore, a plurality of high-voltage electrical components 13 are pattern-connected on the filter circuit board 16, thereby forming a configuration where a plurality of high-voltage electrical components such as the common-mode coil 21, the normal-mode coil 22, and the smoothing capacitor 23 are connected to the high-voltage line. 13, the noise-removing filter circuit 16A is formed, and its filter circuit substrate 16, together with a plurality of high-voltage electrical components 13, power substrates 14, and control substrates 15, forms an integrated unit, and is assembled in The inverter-integrated electric compressor 1 can be assembled in the inverter housing portion 8 of the housing 2 (motor housing 3 ).

Therefore, a substrate different from the control substrate 15 can be used for the filter circuit substrate 16 and the power substrate 14 of the high voltage type, thereby achieving a substrate that can ensure a current density corresponding to a high voltage. At the same time, the bus bar connection and its welding etc. among the multiple high-voltage electrical components 13 constituting the filter circuit 16A can be omitted, so as to realize simplification of assembly, reduction of man-hours, and reduction of production cost brought about thereby, thereby Improve productivity. In addition, since the number of components is reduced, it is possible to reduce the size and compactness of the inverter device 7, and further reduce the size and weight of the inverter-integrated electric compressor 1.

In addition, the inverter device 7 is configured to include a resin structure 12 integrally formed by housing portions 17 of a plurality of high-voltage electrical components 13 and assembly portions 18 of a plurality of substrates 14 , 15 , and 16 . Electrical components 13 , power substrate 14 , control substrate 15 , filter circuit substrate 16 , and UVW bus bar 31 are assembled to resin structure 12 to form an integrated unit as inverter unit 35 .

Therefore, for the inverter unit 35 which is an integrated unit by the resin structure 12, the legs 20 of the resin structure 12 are fastened to the inverter housing part 8 with screws 19 or the like, thereby being integrated into the inverter unit 35. Furthermore, by loosening the screws 19 on the electric compressor 1 , the entire inverter unit 35 can be detached from the inverter housing portion 8 . Therefore, assembly or maintenance of the inverter device 7 can be simplified and facilitated.

Furthermore, in the present embodiment, the inverter device 7 includes a UVW bus bar 31 that converts the electric power converted into three-phase alternating current in the unitized inverter device 7 and outputs it to the motor side through the glass-sealed terminal 32 . Therefore, the electric power converted into three-phase alternating current of a desired frequency in the unitized inverter device 7 can be output to the glass-sealed terminal 32 through the UVW bus bar 31, and applied to the motor built in the case 2 (motor case 3) superior. Such a UVW bus bar 31 can secure a degree of freedom in layout between the output position of the unitized inverter device 7 and the glass-sealed terminal 32 installed in the inverter housing portion 8 , and facilitate design.

In addition, the power substrate 14 and the filter circuit substrate 16 adopt the same structural substrate that can ensure the current density corresponding to high voltage. In the inverter device 7, the filter circuit substrate 16 and the power substrate 14 are the same high-voltage substrate, and both are substrates through which a large amount of electricity flows, so substrates with the same structure can be used. Therefore, the substrate material used in the power substrate 14 can be directly used for the filter circuit substrate 16 , thereby realizing low-cost manufacturing of the filter circuit substrate 16 .

In addition, the power substrate 14 and the filter circuit substrate 16 adopt, for example, a multilayer structure substrate PWB such as a four-layer structure. In this manner, by using a multi-layer structure substrate PWB such as a four-layer structure for the high-voltage power substrate 14 and the filter circuit substrate 16 , sufficient current density corresponding to high voltage can be ensured in each substrate 14 , 16 . Therefore, sufficient heat resistance can be ensured even when high voltage and high current generate heat or are used in a high temperature environment.

Furthermore, in this embodiment, the power substrate 14 and the filter circuit substrate 16 are made of the same substrate material, and are separated and divided to form substrates. Therefore, the two high-voltage power substrates 14 and the filter circuit substrate 16 are made of the same substrate material, that is, two substrates with a multi-layer structure such as a four-layer structure PWB are taken for supporting production. Therefore, the power substrate and the filter circuit substrate can be manufactured efficiently, and the cost can be reduced.

In addition, the present invention is not limited to the invention described in the above-mentioned embodiments, and can be appropriately modified without departing from the scope of the invention. For example, in the above embodiment, the accommodating portion 17 for accommodating a plurality of high-voltage components 13 in the resin structure 12 is arranged facing the side surface of the air inlet 4, but it may also be arranged facing the rear end surface side of the motor case 3. etc., and its arrangement structure can be appropriately changed with a certain degree of freedom.

In addition, in the above-mentioned embodiment, the power supply high voltage line is connected to the connector provided on the side of the cover body 11, thereby inputting the high voltage into the inverter device 7, but it can also be configured to be connected from the side of the inverter housing part 8 Wait for high voltage input.

Symbol Description

1 Inverter integrated electric compressor

2 shells

3 Motor housing

7 Inverter unit

8 Inverter housing

12 resin structure

13 High-voltage electrical components

14 power substrate

15 control board

16 Filter circuit substrate

16A filter circuit

17 Containment

18 Assembly Department

21 Common mode coil (high voltage electrical components)

22 Normal mode coil (high voltage electrical components)

23 Smoothing capacitors (high voltage electrical components)

27 power components

30 control circuits

31 UVW bus bar

32 Glass Sealed Terminals

35 inverter unit (unit)

PWB multilayer substrate

Claims (6)

1. a kind of inverter-integrated electric compressor, its in the inverter resettlement section of shell periphery is arranged at, integrated group Dress DC-to-AC converter, it is characterised in that

The DC-to-AC converter possesses：Constitute the multiple high pressure class Denso parts for removing noise filter circuit；It is mounted with work( The power class substrate of rate element；It is mounted with the control class substrate for controlling class circuit；Pattern connects and installs the plurality of high pressure class Denso parts and constitute the filter circuit substrate of the filter circuit；And the receipts by the plurality of high pressure class Denso parts The integrally formed resin structure of the assembled portion of appearance portion and each substrate,

Its structure is, the plurality of high pressure class Denso parts, the power class substrate, the control class substrate and described Filter circuit substrate being integrally formed unit, storage are arranged in the inverter resettlement section.

2. inverter-integrated electric compressor as claimed in claim 1, it is characterised in that

The plurality of high pressure class Denso parts containing is arranged in the resettlement section of the resin structure,

The power class substrate mounting in the lower surface side of the assembled portion of the resin structure,

Described control class substrate mounting in the upper surface side of the assembled portion of the resin structure,

The filter circuit substrate mounting is received described in the setting high pressure class Denso parts in the resin structure The upper surface side of resettlement section, thus being integrally formed unit.

3. inverter-integrated electric compressor as claimed in claim 2, it is characterised in that the DC-to-AC converter possess by The electric power of three-phase alternating current is converted in the DC-to-AC converter, is exported through glass capsulation terminal and is converged to the UVW of motor side Stream bar.

4. inverter-integrated electric compressor as claimed any one in claims 1 to 3, it is characterised in that the power The identical structural substrate of class substrate and the filter circuit substrate using the current density that can ensure that corresponding high pressure.

5. inverter-integrated electric compressor as claimed in claim 4, it is characterised in that the power class substrate and described Filter circuit substrate adopts multilayer structure substrate.

6. inverter-integrated electric compressor as claimed in claim 4, it is characterised in that the power class substrate and described Filter circuit substrate is made up of same substrate material, and separates, splits and constitute substrate.